You financed your iphone with a short term loan. You owe $$425\mathrm{.}00$ in $15$ months, $$450\mathrm{.}00$ in $18$ months and $$500\mathrm{.}00$ in $30$ months.

How much would you have to pay now to settle the debts if interest is $8\%$ p$.$a$.$ compounded quarterly. Let the focal date be now.